kruss



v A. KRUSS.

Magic Lantern.

2 Sheets-Sheet 1.

Patented Jan. 25, I870.

2 Sheets-Sheet 2. A. KRUSS.

Magie Lantern.

Patented Jan. 25, 1870.

W w H W MPETERS. FHOTO-UTNOGRAPHER WASHINGTON D c an Improved Wonder-Camera, or Magic Lantern,

the lamp, while providing for its ready removal.

' tor,-a combination of two concentrated lenses, and an 7 object-glass,

v lamp, and chimney omitted.

the doors open.

f S, a partition dividing its interior into two compartm's'ite and any similar objects may be placed in slides fiilnitnd finalise afnnuss, OF HAM Letters Patent No. 99,2]:1,

Bone-GERMANY.

dated January 25, 1870 MAGIC LANTERN;

The Schedule referred to in these Letters Patent and making part of the same.

I, A. KRI'iss, of Hamburg, Gern'iany, have invented of which the following is a specification.

Nature and Objects of the Int-cation.

The invention relates to magic lanterns which are employed to throw reflected images of opaque objects upon a white wall, or screen, or other suitable surface.

Myinvent-ion consists in constructing the lantern with separate chambersone for the lamp, another for the object to be exhibited--with lenses in the partition, to concentrate the light upon the object; and in an improved manner of introducing, and concealing In carrying out my invention, I employ one or more reflectors, and asystem of double-convex, plano-convex, p'eriscopic-convcx, or other suitable form oflens, in con1- bination or otberwisqto concentrate, upon the object, the rays from a connnon gas-light or common lamp, with intensity upon the opaque object, so that the reflection, being transmitted through an object-glass, of suitable form, willthrow a clear image upon the white surface, in well-known manner.

The accompanying drawing represents a wondercamera illuminated by an oil-lamp, with one refleccont-anung two convex lenses. Figure 1 is a plan view of the lantern, with the door,

Figure 2 is a horizontal section of the whole, with Figure 3 is a sideclevation thereof, with the parts in the-same position as in fig. 2.

X Y V \V represent the lantern proper, and U T ments. one of which contains the lamp I K I The light from the lan'lp-burner I, with the aid of the reflector l), and two cmi'cclltration-lenses,-B O, is thrown with great intensity on to the object, which is placed in the opening 0, of the door A; or ca'rtcs dc adapted for their reception in the door itsel door closed. g I

As a. high lamp-chimney is of importance to aid in producing an intense flame, 1 form an open space in the lantern-top, as shown at M, in fig. 1, and provide a plate or flange, L, on the door F, to close the space M when the door is shut, and effectually confine the light.

The metallic lantern-chimney N is. made removable, and secured by a flange or collar, G, shown by dotted lines in fig. 3. Dotted lines in same figure also indif, and the cate the height to which the cylindrical glass chimney of the lamp rises within the metal chimney N.

Great care must be taken, when operating with an oil-lamp, that'it burn perfectly well, that the wick be carefully cut,- and that the flame be as large as possible, without smoking.

This done, the apparatus is placed in front of a white screen, at a distance of about six feet, and then the room must be perfectly darkened, and the lamp is put in the place marked for it in the apparatus.

'lhe image of the illuminated opaque object placed in 0, is reflected and magnified by the object-glass F R, on a white wall or white screen. 1

The eifect produced will be the more beautiful, if, instead of a white wall, white paper is used, made transparent by common lamp-oil, to receive the image. In this case, however, the paper must be placed between the camera and the spectator, as the image shows very feebly on the side of the paper next to the camera. It requires some practice to produce'a clear image by adjustingthe object glass.

Objects most to be recommended for this purpose, are, gems, pieces of money, parts of the human body, as,-for instance, a hand, anear, and especially the mouth, beetles, shells, the interior of a watch, a dolls bead, little busts, embroidery, flowers, minerals, &c. As to ca'rtes dc visits, those representing the bust or the head, are preferable to those showing the entire figure. q

Photographs of any kind, not too minutely executed, engravings, wood-cuts, copper-plates, steelplates, stuck on card-board, especially portraits, 850., will produce great effect.

Claims.

I claim; as my invention 1. The combination of the lantern opaque partition S 'l U, (dividing the same into two compartmentsone for the lamp, and the other for the object,) the doors A F, concentration-lenses B O, and object-glass R E, all constructed and arranged as and for the purposes herein specified.

2. The combinationand arrangement of the lantern X Y W V, partition- S 'l U, lamp I K P D, removable chimney N, door F, and plate or 'flange L, for closing thcopen space M, which allows the passage of the lamp-chimney, as explained.

A. KRUSS.

Witnesses:

O. HOFFMANN, H. A. REIGHERT. 

